What the procedure is

A specialized needle with an insulated shaft and an active tip is positioned along the course of a medial branch under fluoroscopic guidance. Radiofrequency current heats the tip, and the heat creates a small, controlled lesion in the nerve. The nerve stops conducting, and the joint it served stops reporting pain.

The placement is different from a block and worth understanding, because it explains why the technique matters. A block only needs the anesthetic to reach the nerve, so a needle near it will do. A lesion has to physically encompass the nerve, so the needle is laid parallel along its course rather than placed perpendicular to it. Sensory and motor stimulation are used before lesioning to confirm the tip is on the right nerve and not on a nerve root.

Who it works for

The selection criterion is not complicated and it is frequently ignored: patients whose facet-mediated pain has been confirmed by diagnostic medial branch blocks, preferably two. Where that is the selection standard, outcomes are good and durable. Where patients are selected on imaging findings or on a clinical hunch, outcomes are poor — and the published literature contains both populations, which is a large part of why the evidence looks inconsistent when read casually.

So if you have read that radiofrequency ablation for back pain does not work, the more precise version is that it does not work when it is done to the wrong people. That is a selection problem, not a technology problem, and it is fixable at the point of diagnosis.

What to expect on the day and afterward

How long it lasts, and what happens then

The nerves regenerate. That is not a failure of the procedure, it is a property of nerves, and the effect typically lasts many months before symptoms return as the medial branches recover. When they do, the procedure can be repeated, and repeat treatments in a patient who responded well the first time generally respond again.

Because the medial branches are sensory to the joint, interrupting them does not cause weakness. What it does mean is that a joint which no longer reports load is a joint you can overload without warning, which is one reason the conditioning work alongside it is not optional.

What the procedure does not do

It does not repair the joint, it does not change the mechanics that overloaded it, and it does not address why the tissue failed. It removes the signal. That is genuinely valuable — a person in less pain moves more, sleeps better and reconditions — and it is a window rather than a cure.

What fills the window is the treatment. Rebuilding the extensor and gluteal mass so the passive structures carry less load. Restoring extension tolerance rather than avoiding extension permanently. Restoring sleep, because that is when connective tissue actually turns over. And addressing the metabolic terrain, because glycated, chronically inflamed collagen fails again under the same load that failed it the first time.

That behavioral and lifestyle work is roughly 40 to 50 percent of the protocol here and the Acceptance and Commitment Therapy component is delivered in-house rather than referred out. A neurotomy without it buys you a quieter year. A neurotomy with it changes what happens after the nerves grow back.

Risks

Post-procedure soreness for one to two weeks is expected rather than a complication. Temporary numbness over the skin of the back is common. A small proportion of patients develop a neuritic burning that settles over weeks. Bleeding, infection and injury to a nerve root are uncommon, and stimulation testing before lesioning is specifically there to reduce the last of those. No steroid is used.

Common questions

Is radiofrequency ablation permanent?

No, and it is designed not to be. The nerves regrow, the effect fades, and the procedure is repeated if it helped. A permanent destructive lesion would be a far bigger commitment with far more ways to go wrong.

The only test that finds facet pain. There is no scan for it. goes through it in detail.

How soon will I know if it worked?

Two to six weeks. Anything you feel in the first week is mostly the procedure, not the result.

That is the subject of The only test that finds facet pain. There is no scan for it..

Will it weaken my back?

Not directly — the medial branches are sensory. There is evidence of some atrophy in the small multifidus muscles they also supply, which is one more reason the strengthening work afterward matters and is prescribed rather than suggested.

There is no scan that finds it. That is why you still do not have an answer. explains what that looks like.

Can I have it again?

Yes, once symptoms return as the nerves regenerate. Response to a repeat is usually similar to the first.

See There is no scan that finds it. That is why you still do not have an answer..

Why did mine not work last time?

The three usual reasons are that the diagnosis was never confirmed by block, that the lesion did not capture the nerve because of needle orientation, or that it was judged during the soreness window. All three are worth going through before concluding the procedure is not for you.

That is the subject of The only test that finds facet pain. There is no scan for it..

Related reading

• The diagnostic block, explained
• Lumbar facet syndrome
• Pain after back surgery
• Sleep and back pain
• What happens at the first visit